Maximum upload of 100MB/s on Thunderbolt to Gigabit Ethernet Adapter

I recently got a new Macbook Pro and also switched internet providers to get a 500/500 fiber optics connection.
When I connect via wifi I reach speeds like 350 MB/s down and 250 MB/s up.
When I do the same test via the thunderbolt cable I get 498 MB/s down and 100 MB/s up.
Every time I do this, the upload speed is always 'capped' at 100 MB/s. (And download always peaks near the 500 limit)
Variables:
Testing is done via speedtest.net.
Wifi is connected to Airport Time Capsule.
Time Capsule is connected directly to the Gigabit router.
When testing with the ethernet adapter I also test directly into the router.
Any ideas why this is happening?

I read that the ethernet cable could be the culprit.
I did a full range of tests with different brands, shielded/non-shielded and all the different categories I had in a closet, all had the same results.
Full 500MB/s bandwith during download, maximum of 100 MB/s during upload.

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It's not really your computer that is getting the 2Gbps download - it is the router/ modem.
If you hooked better/ different hardware up you could probably push those speeds around your network too. The trouble is that most residential hardware is gigabit ethernet not fibre. Fibre cards & cable are expensive in comparison.
The existing hardware may allow you to 'bond or aggregate' multiple ethernet connections into one link to get more speed over ethernet. Obviously this requires more complex routers, switches & a network admin to set it up
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chaicka wrote:
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Device ID: 0x8003
Device Revision: 0x1
UID: 0x0001000202DD0A30
Apple Serial Number: DTN4263048VDWKHBQ
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It's not really your computer that is getting the 2Gbps download - it is the router/ modem.
If you hooked better/ different hardware up you could probably push those speeds around your network too. The trouble is that most residential hardware is gigabit ethernet not fibre. Fibre cards & cable are expensive in comparison.
The existing hardware may allow you to 'bond or aggregate' multiple ethernet connections into one link to get more speed over ethernet. Obviously this requires more complex routers, switches & a network admin to set it up
Those speeds sound nice, this bottleneck will mean that other devices on you network can't choke up the whole connection & make other users sad.

Can the Gigabit Ethernet LAN Port be used with a Thunderbolt to Gigabit Ethernet adaptor and then to a Thunderbolt Hard Drive as a back up drive?

Can the Gigabit Ethernet LAN Port be used with a Thunderbolt to Gigabit Ethernet adaptor and then to a Thunderbolt Hard Drive as a back up drive?

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For streaming high definition video and other demanding sources, you'll need as much bandwidth (speed) as you can get. Ethernet is always the best choice if you can possibly use it. And...there's no wireless interference on an ethernet connection.
Message was edited by: Bob Timmons

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Thanks for Answers!
DoktorMac®, Bern, Switzerland

Got this update:
All Thunderbolt-equipped Mac computers support this adapter. This adapter requires OS X Lion v10.7.4 or later. Thunderbolt-equipped Macs released prior to June, 2012, require the installation of Thunderbolt Software Update 1.2.1 to use this adapter.

Maximum upload of 100MB/s on Thunderbolt to Gigabit Ethernet Adapter

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